milligan



(No Model.)

J. F. MILLIGAN.

AUTOMATIC GRAIN scALni No. 321,129. Patentd June 30, 1885 N. PETERS,Phofolilhflgrnphur. Wzuhingiun, D. C

UNITED STATES PATENT OFFICE.

JOHN F. MILLIGAN, OF ST. LOUIS, MISSOURI, ASSIGNOR OF ONE-HALF TO GEORGES. FOSTER,

OF SAME PLACE.

AUTOMATIC GRAIN-SCALE.

SPECIPICATZON forming part of Letters Patent No. 321,129, dated June 30,1885.

Application filed February .14, 1885. (No model.)

To (tZZ whom it may concern:

Be it known that I, J OHN F. lVIILLIGAN, of the city of St. Louis, inthe State of Missouri, have invented a certain new and usefulImprovement in Automatic Scales, of which the following is a full,clear, and exact description, reference being had to the accompanyingdrawings, forming part of this specification, and in which- Figure 1 isan elevation, part in section, of my improved scale. Fig. 2 is a similarView showing the parts in another position from Fig. 1. Fig. 3 is a topView of the dumpingreceptacle. Figs. 4. and 5 are sections taken on line4 5, Fig. 1, the two figures showing the parts in different positions.Figs. 6 and7 are enlarged Views of the trip arrangement.

My invention relates to an improved automatic scale for weighing grain,&c.; and my invention consists in features of novelty hereinafter fullydescribed, and pointed out in the claims.

Referring to the drawings, A represents the graduated beam of the scalesprovided with the weights B and G, as usual, and having an extension, D,provided with the knife-edges G, from which depend arms H, supporting adumping-receptacle,1, which has gudgcons J, fitting in perforations inthe lower ends of the arms. The beam is supported on standards, L,secured to a base, L, to which it is connected by knife-edges M. Thearms H are connected to the standards L by rods N and are strengthenedby a yoke, N. The dumping-receptacle has a bar, 0, to receive the freeend of a pawl, P, fitting in a slot in one of the arms H and hinged orpivoted at P to the arm. \Vhen the receptacle descends, as hereinafterdescribed, the pawl is disengaged from the notches in the bars, by anarm, R, projecting from one of the standards L. The pawl has aprojection, P that comes against a pin, P in the arm, (see Figs. 4. and5,) when the pawl is in its lower position to hold it (the pawl)horizontal. The receptacle has an inclined central partition, 1. Abovethe beam is a tilting box, T, supported on hangers U depending from aplate or strip, U, or it may be supported by other suitable means. The

hangers have projections U to limit the tilt- 5o ing of the box. The boxhas knife-edges T, fitting in eyes U on the hangers. It is divided by apartition, T", back of which it contains a ball, V, and the front partof which acts as a chute to transfer the grain from a supply-spout, W,to the receptacle I. (See arrows, Fig. 1.) The box is held in theposition shown in Fig. 1 by a dog, Y, having a notch, Y, above which itis curved backward and hinged or pivoted to a support, Y secured to oneof the standards L. Below the pivot the dog is bifurcated or forked, andbetween the fingers Y fits a pin, Y, in lugs Y on the support Y Zrepresents a trip arm or 'finger secured to the beam A, and which comesagainst the lower end of the dog when the receptacle descends for thepurpose of disengaging the notch Y of the dog from a pin, Z, on the boxT to permit the ball to move the box into theposition shown inFig. 2,while the receptacle is emptying, as describedin the operation, which isas follows: The parts being in the position shown in Fig. 1, the grainor other material discharged from the spout W, which is provided with avalve, W, falls into the box T and is conveyed to the receptacle I. Assoon as the'receptacle has received the number of ponndsindicated bytheweights on the beam, which it then overbalances, it descends, theouter end of the beam rising to 83 the position shown in Fig. 2, and indoing so causes the free end of the pawl P to be raised from the notch Oby the arm R, as described, and as soon as this is done the upper end ofthe receptacle begins to tip forward, owing to 85 the inclined partitionI, which causes an excess of grain to be in the front part of thereceptacle, as will be plainly seen. As the receptacle descends the armZ on the beam comes against the lower end of the dog Y and dis- 93engages the notch Y from the pin Z on the box, which will at once betilted into the po sition shown in Fig. 2 by the ball, which rolls downto the outer end of its compartment, as shown. This prevents a dischargeof grain 95 from the box, although it is passing continuously from thespout WV.

In tipping over the receptacle dumps the grain, and in doing this itmakes a half-revolution, (when it is caught again by the pawl P,) itbeing double-ended, as explained, the partition I being in the center.As soon as the grain is discharged from the receptacle the weights onthe beam raise the receptacle again to the position shown in Fig. 1, andafter it returns to this position the flow of grain into the boxovercomes the weight V and tilts the box to the position shown in Fig.l, where it is held, until the receptacle descends again, by the dogengaging the pin Z, as described; and the operation thus goes oncontinuously and automatically.

The device may be portable or fixed, as desired. The grain could betransferred from the spout to the receptacle by other suitable ineansthan the tilting box described.

I claim as my invention- 1. In an automatic scale, in combination withthe graduated beam and dumping-receptacle, the tilting box provided witha rolling weight and arranged to act as a chute when the receptacle isin the position to receive the material and to act as a receiver whilethe receptacle is dumping, substantially as shown and described.

2. In an automatic scale, the combination of the beam,dumping-receptacle, tilting box,

and supply-spont, arranged and operating substantially as shown anddescribed, for the purpose set forth.

3. In an automatic scale, the combination dumping receptacle, two partbox, supply-spout, and rolling weight arranged and operatot the beam,tilting in one part of the box,

described, for

tilting box, one part acting as a chute and the other adapted to containa weight, hangers or stands supporting the box and provided withprojections tolimit the tilting of the box, and supply-spout, arrangedand operating substantially as shown and described, for the purpose setforth.

5. Man automatic scale, the combination of the beam, dumping-recept-acle, weighted tilting box, dog secured to a support and adaptedto engage a pin on the box, and the arm on the beam for coming incontact with the dog as the receptacle descends and disengages itfromthe pin on the box, substantially as shown and described, for thepurpose set forth.

6. In an automatic scale, the combination of the beam,dumping-receptacle, weighted tilting box, dog secured to a support andadapted to engage a pin on the box, and bifurcated at its lower end, pinfitting between the fingers of the dog to limit its movement, and thearm on the beam for coming in contact with the dog as the receptacledescends and disengaging it from the pin on the box, substantially asshown and described, for the purpose set forth.

JOHN F. MILLIGAN.

WVitnesses:

BENJN. A. KNIGHT, J OSEPH WAHLE.

